Libyan Journal of Medicine

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Pneumonia Caused by Moraxella Catarrhalis in Haematopoietic Stem Cell Transplant Patients: Report of Two Cases and Review of The Literature

K.A. Al-Anazi, F.A. Al-Fraih, N.A. Chaudhri, F.I. Al-Mohareb


Moraxella catarrhalis is a gram negative diplococcus that causes a variety of upper and lower respiratory tract infections. Patients with malignant, hematological disorders treated with intensive cytotoxic chemotherapy, and recipients of various forms of haematopoietic stem cell transplant receiving immunosuppressive agents are at high risk of developing severe infections and septic complications. Early detection of the organism and prompt treatment with appropriate antibiotics provide both resolution of the infection and prevention of further consequences. Two patients with haematopoietic stem cell transplant who developed pneumonia caused by M. catarrhalis at King Faisal Specialist Hospital and Research Centre in Riyadh are reported and the literature is reviewed. To our knowledge, these are the first case reports of M. catarrhalis pneumonia in haematopoietic stem cell transplant patients.

Keywords: Moraxella catarrhalis, Acute myeloid leukemia, Graft versus host disease, Stem cell transplant, Umbilical cord blood transplant
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